org.esa.snap.core.dataio

Class ProductSubsetBuilder

java.lang.Object

org.esa.snap.core.dataio.AbstractProductReader

org.esa.snap.core.dataio.AbstractProductBuilder

org.esa.snap.core.dataio.ProductSubsetBuilder

All Implemented Interfaces:

ProductReader

public class ProductSubsetBuilder
extends AbstractProductBuilder

A special-purpose product reader used to build subsets of data products.

Version:

$Revision$ $Date$

Field Summary

Fields inherited from class org.esa.snap.core.dataio.AbstractProductBuilder

bandMap, newProductDesc, newProductName, sceneRasterHeight, sceneRasterWidth, sourceProduct, sourceProductOwner

Constructor Summary

Constructors

Constructor and Description
ProductSubsetBuilder()
ProductSubsetBuilder(boolean sourceProductOwner)

Method Summary

Modifier and Type	Method and Description
protected void	addBandsToProduct(Product product)
protected void	addGeoCodingToProduct(Product product)
protected void	addTiePointGridsToProduct(Product product)
static Product	createProductSubset(Product sourceProduct, boolean sourceProductOwner, ProductSubsetDef subsetDef, String name, String desc)
static Product	createProductSubset(Product sourceProduct, ProductSubsetDef subsetDef, String name, String desc)
protected void	readBandRasterDataImpl(int sourceOffsetX, int sourceOffsetY, int sourceWidth, int sourceHeight, int sourceStepX, int sourceStepY, Band destBand, int destOffsetX, int destOffsetY, int destWidth, int destHeight, ProductData destBuffer, ProgressMonitor pm) The template method which is called by the readBandRasterDataSubSampling method after an optional spatial subset has been applied to the input parameters.
protected Product	readProductNodesImpl() Reads a data product and returns a in-memory representation of it.

Methods inherited from class org.esa.snap.core.dataio.AbstractProductBuilder

addAttribString, addFlagCodingsToProduct, addIndexCodingsToProduct, addMetadataToProduct, cloneFlags, cloneIndexes, cloneMetadataAttributes, cloneMetadataElements, cloneMetadataElementsAndAttributes, close, disposeBandMap, getSceneRasterHeight, getSceneRasterWidth, getSourceProduct, isInstanceOfValidInputType, isSourceProductOwner, readProductNodes, setNewProductDesc, setNewProductName

Methods inherited from class org.esa.snap.core.dataio.AbstractProductReader

configurePreferredTileSize, createTiePointGrid, getGridDiscontinutity, getInput, getProductComponents, getReaderPlugIn, getSubsetDef, isMetadataIgnored, isNodeAccepted, readBandRasterData, readProductNodes, setInput, setSubsetDef, toString

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.esa.snap.core.dataio.ProductReader

readTiePointGridRasterData

Constructor Detail

ProductSubsetBuilder

public ProductSubsetBuilder()

ProductSubsetBuilder

public ProductSubsetBuilder(boolean sourceProductOwner)

Method Detail

createProductSubset

public static Product createProductSubset(Product sourceProduct,
                                          ProductSubsetDef subsetDef,
                                          String name,
                                          String desc)
                                   throws IOException

Throws:

IOException

createProductSubset

public static Product createProductSubset(Product sourceProduct,
                                          boolean sourceProductOwner,
                                          ProductSubsetDef subsetDef,
                                          String name,
                                          String desc)
                                   throws IOException

Throws:

IOException

readProductNodesImpl

protected Product readProductNodesImpl()
                                throws IOException

Reads a data product and returns a in-memory representation of it. This method was called by readProductNodes(input, subsetInfo) of the abstract superclass.

Specified by:

readProductNodesImpl in class AbstractProductBuilder

Returns:

a new product instance

Throws:

IllegalArgumentException - if input type is not one of the supported input sources.

IOException - if an I/O error occurs

readBandRasterDataImpl

protected void readBandRasterDataImpl(int sourceOffsetX,
                                      int sourceOffsetY,
                                      int sourceWidth,
                                      int sourceHeight,
                                      int sourceStepX,
                                      int sourceStepY,
                                      Band destBand,
                                      int destOffsetX,
                                      int destOffsetY,
                                      int destWidth,
                                      int destHeight,
                                      ProductData destBuffer,
                                      ProgressMonitor pm)
                               throws IOException

The template method which is called by the readBandRasterDataSubSampling method after an optional spatial subset has been applied to the input parameters.

The destination band, buffer and region parameters are exactly the ones passed to the original readBandRasterDataSubSampling call. Since the destOffsetX and destOffsetY parameters are already taken into acount in the sourceOffsetX and sourceOffsetY parameters, an implementor of this method is free to ignore them.

Specified by:

readBandRasterDataImpl in class AbstractProductReader

Parameters:

sourceOffsetX - the absolute X-offset in source raster co-ordinates

sourceOffsetY - the absolute Y-offset in source raster co-ordinates

sourceWidth - the width of region providing samples to be read given in source raster co-ordinates

sourceHeight - the height of region providing samples to be read given in source raster co-ordinates

sourceStepX - the sub-sampling in X direction within the region providing samples to be read

sourceStepY - the sub-sampling in Y direction within the region providing samples to be read

destBand - the destination band which identifies the data source from which to read the sample values

destBuffer - the destination buffer which receives the sample values to be read

destOffsetX - the X-offset in the band's raster co-ordinates

destOffsetY - the Y-offset in the band's raster co-ordinates

destWidth - the width of region to be read given in the band's raster co-ordinates

destHeight - the height of region to be read given in the band's raster co-ordinates

pm - a monitor to inform the user about progress

Throws:

IOException - if an I/O error occurs

See Also:

AbstractProductReader.getSubsetDef()

addBandsToProduct

protected void addBandsToProduct(Product product)

addTiePointGridsToProduct

protected void addTiePointGridsToProduct(Product product)

addGeoCodingToProduct

protected void addGeoCodingToProduct(Product product)